Dash Brake Light on/off

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Hitchup - 22 Sep 2006 17:37 GMT

My 92 k2500 dash brake light comes on with acceleration and right or left
turn and sometimes goes off later. The code is a 9 which is the speed sensor
code. However, on this model that is also the default code. The speedometer
still works so that indicates the sensor from the transfer case is OK. The
speed signal is split three ways by the buffer. Is there a way to test the
buffer short of replacement with known good unit? How is the speed of the
wheels compared to the speed sensor to cause the RWAL unit to pulse the
brakes?
Thanks in advance for any feedback?

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Big Al - 22 Sep 2006 18:06 GMT

> My 92 k2500 dash brake light comes on with acceleration and right or left
> turn and sometimes goes off later. The code is a 9 which is the speed
[quoted text clipped - 5 lines]
> unit to pulse the brakes?
> Thanks in advance for any feedback?

Do you know for sure it's just not the switch on the emergency brake? Try
wiggling it while you watch the brake light.

Al

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Hitchup - 24 Sep 2006 23:43 GMT

When it is on and I push on the emergency brake the indicator brightens. I
read that there are three levels of brightness; 1. Emergency Brake. 2. RWAL
brake malfunction and 3. Brake fluid problem. Since the light brightens with
the emergency brake and there isn't a performance issue with braking I'm
focused on the RWAL system.

Thanks for the input as I do tend to make things harder than need be.

>> My 92 k2500 dash brake light comes on with acceleration and right or left
>> turn and sometimes goes off later. The code is a 9 which is the speed
[quoted text clipped - 10 lines]
>
> Al

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